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A spelunker is surveying a cave. She follows a passage that takes her a distance 173 straight west, then a distance 200 in a direction 45.0 east of south, then a distance 288 at 30.0 east of north. After a fourth unmeasured displacement she finds herself back where she started.
Helium-neon laser light (632.8nm) is sent through a 0.3nm-wide single slit. What is the width of the central maximum on a screen 1m in back of the slit
A 76 W light bulb with a resistance of 178 ? is connected to a power supply with a 117 V. What is the internal resistance of the power supply
a 30.0 w lightbulb is 19.0 percent efficient. this means that 19.0 percent of the electric energy is converted to light
A 1590 kg car has just passed a diner. The closest the car came to the diner was R = 12.5 m, find the current magnitude of the angular momentum of the car about ther dinner
in music two notes are said to be an octave apart when one note is exactly twice the frequency of the other. suppose
A circular coil enclosing an area of 200 cm2 is made of 190 turns of copper wire. The wire making up the coil has resistance of 7.0 ?, what is the average current in the coil during that time
at a junction in an a-c circuit a single current divides into two seperate currents I1=10,, I2=5, where I1 lags I2 by 30, use comlex numbers to represent currents.
In 1.00 second an automatic paintball gun can fire 15 balls, each with a mass of 0.113 g , at a muzzle velocity of 90.0 m/s . Calculate the average recoil force experienced by the player
A flywheel of mass 185 kg has an effective radius of 0.60 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel). (a) How much work is done to bring this wheel from rest to a speed of 120 rpm in a..
Consider a vibrating piano string. The string is under a tension T, has a length L and diameter d. What is the frequency f' for the second string
their debt flotation costs are currently estimated to be 4% of the issue's value. GST's federal-plus -tax rate is 40%. Illustrate what is the dollar floatation cost on the new issue?
A thin gold ring of radius 1.11 cm carries a uniform charge per unit length of 1.1e-14 C/m. Find the electric field on the axis of the ring
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